Arc Calculator

Free Online Arc Calculator, Enter Radius & Angle, Then click on calculate button and get result.


Arc Length Calculator

Welcome to xcalculator, the ultimate online tool for calculating arc length. In this blog post, we will show you how to use our web tool to find the length of any arc on a circle, given the radius and the central angle. We will also explain the formula behind the calculation and some of the applications of arc length in geometry, physics and engineering.

What is arc length?

Arc length is the distance between two places along a circle's bent edge. It's not the same as the chord length, which is the straight line distance between two places. The arc length depends on the radius of the circle and the angle subtended by the arc at the center of the circle. The larger the angle, the longer the arc.

How to calculate arc length?

The arc length formula is as follows:

arc length = radius x central angle (in radians)

To use this formula, you need to know the radius of the circle and the central angle of the arc in radians. Radians are a unit of angle measurement that are based on the ratio of the arc length to the radius. One radian is equal to about 57.3 degrees. To convert degrees to radians, you can use this formula:

radians = degrees x pi / 180

Alternatively, you can use our web tool to do the conversion for you. Just enter the degrees in the input box and select "degrees" from the drop-down menu. The tool will automatically convert it to radians and display it in the output box.

How to use our web tool?

Our web tool is very easy and intuitive to use. Just follow these steps:

  • Enter the circle's radius in the input box and choose "radius" from the drop-down menu.
  • Enter the central angle of the arc in the input box and select "radians" or "degrees" from the drop-down menu.
  • Click on the "Calculate" button and see the result in the output box.
  • You can also see a visual representation of the circle, the arc and the angle on the graph below.

Why use our web tool?

Our web tool has several advantages over other online calculators:

  • It is fast and accurate. You can get instant results with high precision.
  • It is simple to use and interactive. You can adjust the input values and see how they affect the output and the graph.
  • It is educational and informative. You can learn more about arc length, radians and their applications by reading our blog posts and FAQs.
  • It is free and accessible. You can use our web tool anytime, anywhere, on any device.

Try it out now and see for yourself how easy and fun it is to calculate arc length with this tool!


In today's fast-paced digital world, having access to efficient and user-friendly online tools is essential, especially when it comes to mathematical calculations. This tool is a game-changer in this regard, offering a wide range of functionalities that can simplify even the most intricate math problems. In this comprehensive guide, we'll explore the features, benefits, and practical applications of this remarkable tool. So buckle up as we start on a mathematical adventure unlike any other!

Understanding this tool

This tool is not just another calculator; it's a versatile mathematical companion that can handle a variety of tasks with precision and efficiency. Here's a rundown of its main features:

Accurate Arc Length Calculation

This tool excels in calculating the arc length of a curve or segment. Whether you're dealing with a simple circle or a complex curve, this tool provides accurate results, making it indispensable for geometry enthusiasts and professionals alike.

User-Friendly Interface

One of the standout features of this web tool is its intuitive user interface. You don't need to be a math genius to use it effectively. The straightforward design ensures that users of all levels can navigate and utilize its features effortlessly.

Customizable Units

Mathematics often requires working with different units of measurement. This tool allows you to switch between units seamlessly, saving you the hassle of manual conversions.

Graphical Representation

Visualizing mathematical concepts is crucial for understanding and problem-solving. This tool provides graphical representations of the curves and segments you're working with, enhancing your comprehension and analysis.


In today's mobile-centric world, accessibility is key. This tool is fully responsive, ensuring that you can use it on your smartphone or tablet without compromising functionality.

Real-Time Updates

Mathematics is all about precision, and this calculator doesn't disappoint. It provides real-time updates as you make changes to your calculations, allowing you to fine-tune your results as needed.

Educational Resources

For students and educators, this tool offers more than just calculations. It comes with a wealth of educational resources, including tutorials and examples, making it an excellent learning companion.

Practical Applications

Now that we've explored the tool's features, let's dive into how it can be applied in various real-life scenarios:

Engineering and Architecture

Engineers and architects often deal with complex curves and structures. This tool simplifies their work by accurately calculating arc lengths, ensuring precision in design and construction.

Art and Design

Artists and designers can use this tool to measure and recreate intricate curves and shapes. Whether it's for digital art or crafting physical objects, the calculator provides the necessary measurements for creative projects.

Mathematics Education

In the classroom, this web tool can be a valuable teaching aid. It allows educators to demonstrate mathematical concepts visually, making learning more engaging and accessible to students.

Surveying and Landscaping

Professionals in surveying and landscaping rely on precise measurements. The calculator's ability to handle curves and segments aids in accurate land assessment and design planning.

Gaming and Animation

Game developers and animators can benefit from this tool by accurately replicating curves and paths within their virtual worlds, adding a layer of realism to their creations.

Frequently Asked Questions (FAQs)

How accurate is This tool?

The tool is highly accurate, using precise formulas to calculate arc lengths. You can trust the results it provides.

Is the tool free to use?

Yes, This tool is available for free, making it accessible to everyone.

Can I use it on mobile devices?

Absolutely! The tool is mobile-friendly, so you can use it on your smartphone or tablet with ease.

Are there any limitations to the tool?

The tool is designed for arc length calculations. If you need other geometric calculations, you may need additional tools.

Is my data secure when using the tool?

Yes, your input data is secure, and the tool does not store any personal information.

Where can I access This tool?

You can access the tool online through its website, making it convenient for users worldwide.


In conclusion, This tool is a powerful resource for anyone dealing with arcs in mathematics, engineering, design, or education. Its user-friendly interface, accuracy, and versatility make it a must-have tool in your digital toolbox. Say goodbye to manual calculations and hello to efficiency. Give it a try today and simplify your arc length calculations like never before.

Don't miss out on the opportunity to harness the power of This tool. Embrace the future of arc length calculations and make your mathematical journey smoother than ever.

Xcalculators is collection of free online calculator tools. Calculators which are easy to use, fast and secure. We highly focused on user privacy and content security, we don't see or share your data.